List of Articles Masomeh Negahban Article 1 - Investigating Nitrate and Nitrite Concentrations in Drinking Water of Five Districts in Tehran and Assessing the Presence of Nitrate Reducing Bacteria 10.22034/jchr.2021.1921756.1246 Reza Haji Seyed Mohammad Shirazi Maryam Tala Seyed Amir Ali Anvar Bahareh Nowruzi Zohreh Saeidi Masomeh Negahban Journal of Chemical Health Risks , Issue 4 , Year , Summer 2021